Method and apparatus for the uv-treatment of aqueous liquids
CA 2463503 C · Owner: Pecile, Sandro · Inventors: Pecile, Sandro; Hallett, Ronald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for treating a pressurized liquid. The apparatus includes pressurized liquid treatment chamber (16) having a window (18) transmissive to UV light; a UV light source (14a, 14b) outside of the chamber to emit UV light into the chamber; a shaft (24) which extending between inlet and outlet ends of .the chamber which turns about a central axis of the chamber; a flexible cleaning member (30) affixed to the shaft and engaging an interior surface of the window (18); and at least one member (36) extending radially from the shaft into the treatment chamber (16) to disrupt axial flow of water through the chamber.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 11, 2002 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.